Features:
Very compact and lightweight
Slides easily up the rope and jams when the cam is loaded
Slides easily downwards if the cam is prevented from engaging
If overloaded or subjected to an impact force, the rope may slip through the device
Locking pin resists accidental disconnection of the device from the rope

Specs:
Individually tested
For use on single rope from 9 to 13 mm in diameter
162 g